> Hi Nicholas,
> I don't see a similar slowdown on my system. I have an Athlon 900 with
> a MSI K7T Pro-2a motherboard and a 15Gig Maxtor 31536H2 5400 ATA100 HD.
> This motherboard is a KT133 board, but it does also have a 686B chip.
> Running the same steps you did, I get the following:
>
> [ogah@ogah /Junk]> ./dnetc -hide -nice 19
> [ogah@ogah /Junk]> sudo nice -n '-19' hdparm -m16 -tT /dev/hda
>
> /dev/hda:
> setting multcount to 16
> multcount = 16 (on)
> Timing buffer-cache reads: 128 MB in 0.70 seconds =182.86 MB/sec
> Timing buffered disk reads: 64 MB in 2.41 seconds = 26.56 MB/sec
> [ogah@ogah /Junk]> ./dnetc -shutdown
> dnetc: 1 distributed.net client was shutdown. 0 failures.
> [ogah@ogah /Junk]> sudo nice -n '-19' hdparm -m16 -tT /dev/hda
>
> /dev/hda:
> setting multcount to 16
> multcount = 16 (on)
> Timing buffer-cache reads: 128 MB in 0.67 seconds =191.04 MB/sec
> Timing buffered disk reads: 64 MB in 2.42 seconds = 26.45 MB/sec
>
> One thing that comes to mind is that we are probably not using the same
> version of the via82cxxx ide driver. I assume that you are using the
> via82cxxx v3.20 driver that came with 2.4.2. You can check which version
> of the via driver you are using by looking at /proc/ide/via. I am using
> v4.3 of the via82cxxx driver which Vojtech Pavlik (the via82cxxx
> maintainer) sent to the linux-kernel mailing list a while back. I have
Yep I was. Couldn't find that particular message on the mailing list
although I did find an earlier set. (See below.)
Is there a central web location for these files?
> attached the 2 files you need. Just copy the 2 files to
> /usr/src/linux/drivers/ide/, replacing the versions that already exist in
> that directory. That might fix your problems, as Vojtech fixed quite a
> few bugs with regards to the 686b support between versions v3.20 and v4.3.
> I know that for me, I was never able to get my ATA66 drive (hdb) to run at
> full speed until driver v4.3. Until then, hda would get set correctly to
> udma5, but hdb would get set to udma2 (ATA33) instead of udma4 (ATA66).
First up, thanks for the help.
I installed the two files you gave me, plus I added another file I
found in archives:
nic@thunder:~$ grep Id *.h *.c
ide-timing.h: * $Id: ide-timing.h,v 2.1 2001/02/08 19:32:56 vojtech Exp $
amd7409.c: * $Id: amd7409.c,v 2.0 2001/02/08 21:08:60 vojtech Exp $
via82cxxx.c: * $Id: via82cxxx.c,v 4.3 2001/02/21 08:10:60 vojtech Exp $
amd7409.c was with:
ide-timing.h: * $Id: ide-timing.h,v 2.0 2001/02/08 19:32:56 vojtech Exp $
via82cxxx.c: * $Id: via82cxxx.c,v 4.0 2001/02/08 19:32:60 vojtech Exp $
not sure if that would affect things.
Anyway seems to have greater improved performance, but not without load on the system.
Nic@thunder:~$ sudo nice -n '-19' hdparm -m16 -tT /dev/hda
/dev/hda:
setting multcount to 16
multcount = 16 (on)
Timing buffer-cache reads: 128 MB in 0.78 seconds =164.10 MB/sec
Timing buffered disk reads: 64 MB in 4.33 seconds = 14.78 MB/sec
nic@thunder:~$ dnetc/dnetc -hide -nice 19
nic@thunder:~$ sudo nice -n '-19' hdparm -m16 -tT /dev/hda
/dev/hda:
setting multcount to 16
multcount = 16 (on)
Timing buffer-cache reads: 128 MB in 0.80 seconds =160.00 MB/sec
Timing buffered disk reads: 64 MB in 1.69 seconds = 37.87 MB/sec
nic@thunder:~$ cat /proc/ide/via
----------VIA BusMastering IDE Configuration----------------
Driver Version: 4.3
South Bridge: VIA vt82c686b
Revision: ISA 0x40 IDE 0x6
Highest DMA rate: UDMA100
BM-DMA base: 0xe000
PCI clock: 34MHz
Master Read Cycle IRDY: 0ws
Master Write Cycle IRDY: 0ws
BM IDE Status Register Read Retry: yes
Max DRDY Pulse Width: No limit
-----------------------Primary IDE-------Secondary IDE------
Read DMA FIFO flush: yes yes
End Sector FIFO flush: no no
Prefetch Buffer: yes yes
Post Write Buffer: yes no
Enabled: yes yes
Simplex only: no no
Cable Type: 80w 40w
-------------------drive0----drive1----drive2----drive3-----
Transfer Mode: UDMA PIO PIO PIO
Address Setup: 29ns 116ns 116ns 116ns
Cmd Active: 87ns 87ns 464ns 464ns
Cmd Recovery: 58ns 58ns 464ns 464ns
Data Active: 87ns 319ns 319ns 319ns
Data Recovery: 58ns 261ns 261ns 261ns
Cycle Time: 20ns 580ns 580ns 580ns
Transfer Rate: 100.0MB/s 3.4MB/s 3.4MB/s 3.4MB/s
Here are some bonnie++ stats comparisions.
With dnetc running:
Version 1.00h ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
thunder 1G 7012 85 49441 24 7558 5 6210 57 38020 11 170.8 0
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 827 85 +++++ +++ 15949 85 830 85 +++++ +++ 3703 85
thunder,1G,7012,85,49441,24,7558,5,6210,57,38020,11,170.8,0,16,827,85,+++++,+++,15949,85,830,85,+++++,+++,3703,85
Without dnetc running:
Version 1.00h ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
thunder 1G 7990 99 44434 23 6905 6 5429 65 17395 5 163.4 0
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 824 99 +++++ +++ 16754 100 827 99 +++++ +++ 4346 100
thunder,1G,7990,99,44434,23,6905,6,5429,65,17395,5,163.4,0,16,824,99,+++++,+++,16754,100,827,99,+++++,+++,4346,100
The Block Sequential Input test seems to be the only telling difference.
If I get a change I'll borrow my Abit KT7 (686a) over the weekend and attempt
to just swap HDDs and test again.
Nicholas
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